/***
*atox.c - atoi and atol conversion
*
* Copyright (c) 1989-1997, Microsoft Corporation. All rights reserved.
*
*Purpose:
* Converts a character string into an int or long.
*
*******************************************************************************/

#ifndef _ATOX_H_
#define _ATOX_H_

//#pragma warning (disable: 4273)

/***
*long atol(char *nptr) - Convert string to long
*
*Purpose:
* Converts ASCII string pointed to by nptr to binary.
* Overflow is not detected.
*
*Entry:
* nptr = ptr to string to convert
*
*Exit:
* return long int value of the string
*
*Exceptions:
* None - overflow is not detected.
*
*******************************************************************************/

long __cdecl atol( const char *nptr )
{
	int c; /* current char */
	long total; /* current total */
	int sign; /* if '-', then negative, otherwise positive */

	/* skip whitespace */
	while ( isspace((int)(unsigned char)*nptr) )
		++nptr;

	c = (int)(unsigned char)*nptr++;
	sign = c; /* save sign indication */
	if (c == '-' || c == '+')
		c = (int)(unsigned char)*nptr++; /* skip sign */

	total = 0;

	while (isdigit(c)) {
		total = 10 * total + (c - '0'); /* accumulate digit */
		c = (int)(unsigned char)*nptr++; /* get next char */
	}

	if (sign == '-')
		return -total;
	else
		return total; /* return result, negated if necessary */
}


/***
*int atoi(char *nptr) - Convert string to long
*
*Purpose:
* Converts ASCII string pointed to by nptr to binary.
* Overflow is not detected. Because of this, we can just use
* atol().
*
*Entry:
* nptr = ptr to string to convert
*
*Exit:
* return int value of the string
*
*Exceptions:
* None - overflow is not detected.
*
*******************************************************************************/

int __cdecl atoi( const char *nptr )
{
	return (int)atol(nptr);
}

#ifndef _NO_INT64

__int64 __cdecl _atoi64( const char *nptr )
{
	int c; /* current char */
	__int64 total; /* current total */
	int sign; /* if '-', then negative, otherwise positive */

	/* skip whitespace */
	while ( isspace((int)(unsigned char)*nptr) )
		++nptr;

	c = (int)(unsigned char)*nptr++;
	sign = c; /* save sign indication */
	if (c == '-' || c == '+')
		c = (int)(unsigned char)*nptr++; /* skip sign */

	total = 0;

	while (isdigit(c)) {
		total = 10 * total + (c - '0'); /* accumulate digit */
		c = (int)(unsigned char)*nptr++; /* get next char */
	}

	if (sign == '-')
		return -total;
	else
		return total; /* return result, negated if necessary */
}

#endif /* _NO_INT64 */

#endif